* {
  margin: 0;
  padding: 0;
}         /* 消除网页原本自带边距*/
#wrapBg{
  width: 343px;
  height: 480px;
  margin: 0 auto;
  position: relative;
  top: 100px;
  background-image: url(../img/bg.jpg);
  overflow: hidden;
}
#headTitle{
  width: 236px;
  height: 77px;
  background-image: url(../img/head.jpg);
  position: absolute;
  left: 53px;
  top: 100px;
}
#headBird{
  float: right;
  margin-top: 25px;
  /* padding-top: 25px; */
}

#startBtn{
  width: 85px;
  height: 29px;
  background-image: url(../img/start.jpg);
  position: absolute;
  left: 129px;
  top: 250px;
}
#grassLand1,#grassLand2{
  width: 343px;
  height: 14px;
  background-image: url(../img/banner.jpg);
  position: absolute;
  top: 423px;
  
}
  #grassLand1{
    left: 0;
  }
  #grassLand2{
    left: 343px;
  }

